Founded in 1907, Pittsburg County is one of 77 counties in the state of Oklahoma. Historically, Pittsburg County was formed from Choctaw Nation land. The city of McAlester is the county seat. With FIPS code of 121, Pittsburg County has a population of 43,633 and area of 1,306 square miles (3,383 km2).
List of all cities in Pittsburg County, OK alphabetically
| City/Town | Postal Code | Area Code |
| Alderson, OK | 74522 | 918 |
| Bache, OK | 74501 | 918 |
| Blanco, OK | 74528 | 918 |
| Blocker, OK | 74529 | 918 |
| Canadian, OK | 74425 | 918 |
| Crowder, OK | 74430 | 918 |
| Haileyville, OK | 74546 | 918 |
| Hartshorne, OK | 74547 | 918 |
| Haywood, OK | 74501 | 918 |
| Indianola, OK | 74442 | 918 |
| Kiowa, OK | 74553 | 918 |
| Krebs, OK | 74554 | 918 |
| McAlester, OK | 74501 | 918 |
| 74502 | 918 | |
| 74529 | 918 | |
| Pittsburg, OK | 74560 | 918 |
| Quinton, OK | 74561 | 918 |
| Richville, OK | 74501 | 918 |
| Savanna, OK | 74565 | 918 |
| Scipio, OK | 74501 | 918 |
| Wardville, OK | 74576 | 918 |